[ANNOUNCE] Vala 0.9.1 - Compiler for the GObject type system

[news 28]

We are pleased to announce version 0.9.1 of Vala, a compiler for the

GObject type system.

 

Vala 0.9.1 is now available for download at:

http://download.gnome.org/sources/vala/0.9/

 

Changes since 0.8.0

* Support constants in enums.

* Deprecate +=/-= syntax to connect/disconnect signal handlers.

* Add experimental support for Dova profile.

* Update Genie parser (Jamie McCracken).

* Add clutter-gst-1.0 bindings (Ali Sabil).

* Add gdu and gdu-gtk bindings.

* Add libesmtp bindings (Adrien Bustany).

* Add mx-1.0 bindings (Evan Nemerson).

* Add orc-0.4 bindings (Fabian Deutsch).

* Add rest-extras-0.6 bindings (Adrien Bustany).

* Updates to the GLib, GStreamer, Linux, SQLite, and other bindings.

* Many bug fixes.

 

Vala is a new programming language that aims to bring modern programming

language features to GNOME developers without imposing any additional

runtime requirements and without using a different ABI compared to

applications and libraries written in C.

 

valac, the Vala compiler, is a self-hosting compiler that translates

Vala source code into C source and header files. It uses the GObject

type system to create classes and interfaces declared in the Vala source

code.

 

The syntax of Vala is similar to C#, modified to better fit the GObject

type system. Vala supports modern language features as the following:

 

* Interfaces

* Properties

* Signals

* Foreach

* Lambda expressions

* Type inference for local variables

* Generics

* Non-null types

* Assisted memory management

* Exception handling

 

Vala is designed to allow access to existing C libraries, especially

GObject-based libraries, without the need for runtime bindings. All that

is needed to use a library with Vala is an API file, containing the class

and method declarations in Vala syntax. Vala currently comes with

bindings for GLib and GTK+. It's planned to provide generated bindings for

the full GNOME Platform at a later stage.

 

Using classes and methods written in Vala from an application written in

C is not difficult. The Vala library only has to install the generated

header files and C applications may then access the GObject-based API of

the Vala library as usual. It should also be easily possible to write a

bindings generator for access to Vala libraries from applications

written in e.g. C# as the Vala parser is written as a library, so that

all compile-time information is available when generating a binding.

 

More information about Vala is available at

 

http://live.gnome.org/Vala

 

 

Jürg Billeter

 

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